H - Electricity – 04 – R
Patent
H - Electricity
04
R
H04R 25/00 (2006.01)
Patent
CA 2100110
An auditory prosthesis, and method, which is able to adapt better to filter out a selected unwanted portion of the auditory input signal by relying on a human activation, such as activation by the user, who knows by listening when the auditory environment contains only, or mostly only, the selected unwanted portion of the auditory input signal. This person may then activate the adaptive filter of the auditory prosthesis. The adaptive filter then utilizes the then current auditory environment as a noise reference on which to adapt. An auditory prosthesis which is adapted to receive environmental sound containing a selected auditory component and which is adapted to supply an auditory stimulus which is perceptible to a user. A transducer is adapted to receive the environmental sound and convert the environmental sound into an electrical input signal. The electrical input signal contains a selected electrical component corresponding to the selected auditory component in the environmental sound. An adaptive filter receives the electrical input signal and provides a filtered signal. The adaptive filter has adaptable filtering characteristics based upon a reference. The adaptive filter is operable in response to activation by the user to adapt the filtering characteristics using the electrical input signal as the reference to determine the filtering characteristics required to filter the selected electrical component from the electrical input signal. The filtered signal is received and converted to the auditory stimulus. Rapid adaption by the filter in response to activation by the user and slow adaption when not activated may be used.
Fravel Ralph P.
Soli Sigfrid D.
LandOfFree
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